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https://issues.apache.org/jira/browse/YARN-5534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16111750#comment-16111750
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Miklos Szegedi commented on YARN-5534:
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bq. The config should be there in both the places - yarn-site.xml as well as
container-executor.cfg so that the java code can read from yarn-site.xml (if
needed) and C code from container-executor.cfg and the C code can double check
what's coming in from the java land with what is there in
container-executor.cfg which is an official blessing by root.
[~vinodkv], in general I think this is redundant. Each feature should have only
one config location otherwise it affect usability (for the admins). Example: I
actually like the way you and Varun solved getCGroupsCpuResourceHandler(),
where any of the config settings implied that the user needs a resource handler
without any other config knob.
> Allow whitelisted volume mounts
> --------------------------------
>
> Key: YARN-5534
> URL: https://issues.apache.org/jira/browse/YARN-5534
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: yarn
> Reporter: luhuichun
> Assignee: Shane Kumpf
> Attachments: YARN-5534.001.patch, YARN-5534.002.patch,
> YARN-5534.003.patch
>
>
> Introduction
> Mounting files or directories from the host is one way of passing
> configuration and other information into a docker container.
> We could allow the user to set a list of mounts in the environment of
> ContainerLaunchContext (e.g. /dir1:/targetdir1,/dir2:/targetdir2).
> These would be mounted read-only to the specified target locations. This has
> been resolved in YARN-4595
> 2.Problem Definition
> Bug mounting arbitrary volumes into a Docker container can be a security risk.
> 3.Possible solutions
> one approach to provide safe mounts is to allow the cluster administrator to
> configure a set of parent directories as white list mounting directories.
> Add a property named yarn.nodemanager.volume-mounts.white-list, when
> container executor do mount checking, only the allowed directories or
> sub-directories can be mounted.
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